<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>删除</title>
</head>
<body>
<form action="l" method="post">
    <input type="button" value="返回上一页" id="f" style="color:gray; font-size: 18px;">
</form>
<script>
    alert("删除成功");
    var f= document.getElementById("f");
    f.onclick=function () {
        window.open('login.html');
    }
</script>
</body>
</html>